package com.sen.reggie.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.sen.reggie.common.CustomException;
import com.sen.reggie.entity.Category;
import com.sen.reggie.entity.Dish;
import com.sen.reggie.entity.Setmeal;
import com.sen.reggie.mapper.CategoryMapper;
import com.sen.reggie.service.CategoryService;
import com.sen.reggie.service.DishService;
import com.sen.reggie.service.SetmealService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.jdbc.support.CustomSQLExceptionTranslatorRegistrar;
import org.springframework.stereotype.Service;
import sun.reflect.generics.tree.VoidDescriptor;

/**
 * @author: Zs
 * @date:2022/6/2 15:33
 */
@Service
@SuppressWarnings({"all"})
public class CategoryServiceImpl  extends ServiceImpl<CategoryMapper, Category> implements CategoryService {


    @Autowired
    private  DishService dishService;

    @Autowired
    private SetmealService setmealService;

    public void  remove(long id){
        /***
         * 根据id删除分类，删除之前需要进行判断
         * @param id
         */
        //查询当前分类是否关联了菜品，如果已经关联，抛出一个业务异常

        //查询当前分类是否关联了套餐，如果已经关联，抛出一个业务异常

        //正常删除分类
        LambdaQueryWrapper<Dish> dishLambdaQueryWrapper=new LambdaQueryWrapper<>();
        //添加查询条件，根据分类id进行查询
        dishLambdaQueryWrapper.eq(Dish::getCategoryId,id);
        int count1=dishService.count(dishLambdaQueryWrapper);
       //查询当前分类是否关联菜品，如果已经关联，抛出一个业务异常
        if (count1>0){
            //已经关联菜品，抛出一个业务异常
            throw new CustomException("当前分类下关联了菜品，不能删除");
        }
        LambdaQueryWrapper<Setmeal> setmealLambdaQueryWrapper=new LambdaQueryWrapper<>();
        setmealLambdaQueryWrapper.eq(Setmeal::getCategoryId,id);

        int count2=setmealService.count(setmealLambdaQueryWrapper);
        if (count2 >0) {
            //已经关联套餐，抛出一个业务异常
            throw new CustomException("当前分类下关联了套餐，不能删除");
        }
         super.removeById(id);
    }
}
